Number of country pairs

	pairs	reciprocal pairs (by date)	reciprocal pairs (across dates)	EU pairs	EU reciprocal pairs (by date)	EU reciprocal pairs (across dates)
query_date
2020-07-25	4582	1524	890	339	162	90
2020-10-08	4520	1450	890	333	160	90
2020-10-20	4704	1526	890	327	160	90
2020-11-04	4738	1478	890	313	138	90
2020-11-19	4694	1474	890	310	136	90
2020-12-01	4682	1474	890	309	134	90
2020-12-16	4662	1452	890	315	140	90
2020-12-31	4599	1422	890	302	126	90
2021-01-12	4516	1454	890	309	140	90
2021-01-27	4645	1420	890	307	132	90
2021-02-08	2593	1196	890	178	110	90
2021-02-23	4618	1426	890	314	134	90

Only keep reciprocal pairs across all dates for all plots below

Time

Difference between countries pairs that shared a common colonizer?